S Series Pneumatic Die Grinder (Weld & Casting Finishing) — hero shot

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S Series · Die Grinder ISO 11148-7 (pneumatic grinders)

S Series Pneumatic Die Grinder (Weld & Casting Finishing)

Name: S Series Pneumatic Die Grinder (Weld & Casting Finishing)
Brand: Kedes Machine
SKU: S Series · Die Grinder

Straight-shaft pneumatic die grinder for weld bead trim, mold polish and internal-pipe finishing. Multiple power grades from 0.21 kW finishing up to 1.70 kW heavy-duty; optional extended shaft to 2050 mm reaches inside pipes, tanks and deep mold cavities.

Power grades

0.21 – 1.70 kW

Free speed

4,900 – 22,000 r/min

Air pressure

0.63 MPa standard

Reach

Standard to 2050 mm (L variants)

TYPICAL REPLY · 1 WORKING SHIFT (GMT+8)

01 Model Comparison

Pick your size — 4 models in the series.

	S60 / S80 Standard duty · 0.21 – 0.28 kW · ~22,000 rpm	S100 / S150 Medium duty · 0.34 – 0.51 kW · 15,000 – 17,500 rpm	S200 Heavy duty · 1.70 kW · 4,900 rpm	S-L (extended) Long shaft variant · up to 2050 mm reach
Rated power	0.21 – 0.28 kW	0.34 – 0.51 kW	1.70 kW	varies
Free speed	~22,000 rpm	15,000 – 17,500 rpm	4,900 rpm	to 18,000 rpm
Air consumption	10 – 11 L/s	12 – 18 L/s	39 L/s	depends on power
Max weight	~1.0 kg	~5.0 kg	6.5 kg	up to 5.0 kg
Best application	Finish polish, mold	General weld trim	Heavy stock removal	Internal pipe / mold reach
Quote this model

03 Key Features

Built for the job site.

// 01

Power grades from finishing to heavy-duty

0.21 kW finishing tools for mold polish and detail work, up to 1.70 kW heavy-duty for casting trim and weld stock removal. Match tool to material — over-powered tools destroy mold polish, under-powered tools stall on heavy welds.

// 02

Extended shaft (L variants) — internal reach

Long-shaft configurations to 2050 mm reach inside pipes, tanks and deep mold cavities — the only practical tool for internal weld and surface work where access from outside is the only option.

// 03

Up to 22,000 r/min — fine polish

High-speed S60 / S80 sized for fine carbide-burr and mold-polish work where surface finish requires high tool linear speed at small tool diameter.

// 04

Spark-free pneumatic drive

ATEX-safe for hazardous areas — petrochemical maintenance, boiler interior work, nuclear-grade vessel polishing.

04 Industry Applications

Where this series earns its keep.

Mold & die polishing

Internal mold surface finishing on stamping, injection and forging dies — extended shaft variants reach deep cavity geometry.

See mold & die polishing solutions

Petrochemical & refinery maintenance

Internal pipe weld and surface grinding inside hazardous-area process piping during turnaround windows.

See petrochemical & refinery maintenance solutions

Casting & foundry finish

Burr and flash removal on metal castings — match power grade to material (S200 for heavy iron / steel, S60 for non-ferrous).

See casting & foundry finish solutions

06 FAQ

Common questions about the S Series · Die Grinder.

Can't find your answer?

S Series vs S40/S50 engraving grinder?

S40/S50 is a sub-range specifically for engraving and ultra-fine polishing with smaller diameter tools (up to ~16 mm collet). Full S Series covers a broader power range including heavy-duty 1.7 kW casting trim work that engraving tools cannot handle. Buy S40/S50 for mold-detail and die work; full S range for production die grinding and weld trim.

Which model for inside-pipe weld grinding?

S-L extended-shaft variants (up to 2050 mm). The standard tool for grinding root weld defects from inside large-diameter pipe and tank runs during inspection-driven repair. Specify shaft length per pipe run length at quotation.

07 Related Series